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Refractory flame-retardant silicone rubber sheath material for cables and preparation method thereof

A fire-resistant, flame-retardant, silicone rubber technology, used in insulated cables, rubber insulators, cables, etc., can solve the problem of difficulty in ensuring the normal operation of cables, and achieve high mechanical strength, good flame retardant effect, and good insulation performance.

Inactive Publication Date: 2014-02-12
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the silicone rubber cable has the characteristics of heat radiation resistance, cold resistance, acid and alkali resistance, corrosive gas, and waterproof, its fire and flame resistance performance needs to be improved. Once the sheath layer is ignited, it is difficult to ensure that the cable can work normally.

Method used

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  • Refractory flame-retardant silicone rubber sheath material for cables and preparation method thereof

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Embodiment Construction

[0012] A fire-resistant and flame-retardant silicone rubber sheath material for cables, which is made of the following raw materials (kg): methyl vinyl silicone rubber 80, chlorohydrin rubber 20, bisphenol A polycarbonate 15, zinc oxide 2.5, 2-thiolbenzimidazole 3, microcrystalline paraffin 5, stearic acid 1.5, dimethyl silicone oil 4, nano-silicon nitride 12, fumed silica 25, calcined clay 10, glass fiber 4, corundum powder 8, Epoxidized soybean oil 7, dicumyl peroxide 0.4, triallyl cyanurate 1.5, bisphenol AF2, tetraisooctyl pyromellitic acid 10, diphenyloctyl phosphate 10, zinc borate hydrate 10, Magnesium hydroxide 12, sodium molybdate 8, ferrocene 5, trinonylphenyl phosphite 8, composite filler 4;

[0013] The preparation method of the composite filler is as follows: a. Weigh kaolin, diatomaceous earth, and dolomite in a weight ratio of 7:5:3, pulverize them, mix them uniformly, and then wet ball mill them for 20 hours, then dry them at 115° C., and then dry them at 570° ...

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Abstract

The invention discloses a refractory flame-retardant silicone rubber sheath material for cables and a preparation method thereof. The refractory flame-retardant silicone rubber sheath material for cables is prepared from the following raw materials in parts by weight: 70-90 parts of methylvinyl silicone rubber, 15-25 parts of epichlorohydrin rubber, 10-20 parts of bisphenol A polycarbonate, 2-3 parts of zinc oxide, 3-4 parts of 2-thiolbenzimidazole, 4-6 parts of microcrystalline wax, 1-2 parts of stearic acid, 3-5 parts of dimethyl silicone oil, 10-15 parts of nano silicon nitride, 20-30 parts of gas-phase silica white, 8-12 parts of calcined argil, 3-6 parts of fiberglass, 5-10 parts of alundum powder, 5-10 parts of epoxy soybean oil, 0.3-0.6 part of dicumyl peroxide, 1-2 parts of triallyl cyanurate and the like. The sheath material has the characteristics of stable fire resistance, favorable insulating property, high mechanical strength and the like, has excellent flame retardancy, oil resistance, freezing resistance, acid / alkali resistance, radiation aging resistance, wear resistance and other properties, and is completely reliable and durable.

Description

technical field [0001] The invention relates to a cable sheath material and a preparation method thereof, in particular to a fire-resistant and flame-retardant silicone rubber sheath material for cables and a preparation method thereof. Background technique [0002] The cable sheath is an indispensable intermediate structural part of the cable, which plays the role of protecting the cable, ensuring the safety of the cable, and isolating the copper wire from water, air and other media to avoid leakage. Although silicone rubber cables have the characteristics of heat radiation resistance, cold resistance, acid and alkali resistance, corrosive gas resistance, and water resistance, their fire and flame resistance performance needs to be improved. Once the sheath layer is ignited, it is difficult to ensure that the cable can work normally. Contents of the invention [0003] The object of the present invention is to provide a fire-resistant and flame-retardant silicone rubber sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L71/00C08L69/00H01B3/28H01B7/295C08K13/04C08K7/14C08K3/22C08K5/37C08K5/09C08K3/34C08K3/36C08K5/1515C08K5/14C08K5/3492C08K5/12C08K5/523C08K3/38C08K3/24C08K5/56C08K5/526B29C35/02
Inventor 何成龙何源
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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